(80 days. Heirloom. DETERMINATE) Ace has excellent, fresh tomato flavor, and is a lower-acid tomato with large, round, smooth fruits and beautiful bright red color. An old favorite for canning. 6 to 8 ounce fruits are just the right size to quarter and pack into quart jars. Yields are exceptional. As a determinate type, the majority of the fruits ripen over a 1-2 week period; another reason home canners choose Ace.